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83 lines (71 loc) · 2.88 KB
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/* This file is part of VoltDB.
* Copyright (C) 2008-2010 VoltDB Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef VOLT_CONNECTION_POOL_H_
#define VOLT_CONNECTION_POOL_
#include "Client.h"
#include "StatusListener.h"
#include <boost/unordered_map.hpp>
#include <boost/thread/tss.hpp>
#include <boost/thread.hpp>
#include <boost/shared_ptr.hpp>
#include <string>
namespace voltdb {
class ConnectionPool;
class ClientStuff;
typedef std::vector<boost::shared_ptr<ClientStuff> > ClientSet;
typedef boost::unordered_map<std::string, std::vector<boost::shared_ptr<ClientStuff> > > ClientMap;
void cleanupOnScriptEnd(ClientSet *clients);
/*
* A VoltDB connection pool.
*/
class ConnectionPool {
friend void cleanupOnScriptEnd(ClientSet *);
public:
ConnectionPool();
virtual ~ConnectionPool();
/*
* Retrieve a client that connects to the specified hostname and port using the provided username and password
*/
voltdb::Client acquireClient(std::string hostname, std::string username, std::string password, short port = 21212) throw (voltdb::ConnectException, voltdb::LibEventException, voltdb::Exception);
/*
* Retrieve a client that connects to the specified hostname and port using the provided username and password
*/
voltdb::Client acquireClient(std::string hostname, std::string username, std::string password, StatusListener *listener, short port = 21212) throw (voltdb::ConnectException, voltdb::LibEventException, voltdb::Exception);
/*
* Release any unreleased clients associated with this thread/script
*/
void onScriptEnd();
/*
* Retrieve the global connection pool
*/
static voltdb::ConnectionPool* pool();
private:
boost::thread_specific_ptr<ClientSet> *m_borrowedClients;
ClientMap m_clients;
boost::mutex m_lock;
};
void onLoad();
void onUnload();
void onScriptEnd();
}
#endif /* VOLT_CONNECTION_POOL_H_ */